Pier

There's no way to convey the scale of this project on the web. To begin
the project, it was necessary to build an island, to house the temporary
factories that produced the piers and seabed mattresses. You have to see it
in person.

The piers were made on the island, then the island was flooded so that
special boats could manuever them into position. The entire project used
64 piers. This is an extra one.